1. Protein separation SDS-PAGE molecular weight markers stain intensity estimation
2. Serum protein analysis albumin globulin α1 α2 β γ electrophoresis lanes
3. Immunoglobulin spike monoclonal gammopathy multiple myeloma diagnostic evidence
4. Decreased albumin increased γ-globulin liver disease nephrotic syndrome inflammation
5. Densitometry curve interpretation peak area quantification protein concentration
6. Case study gel image evaluation serum component abnormalities clinical implications